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Compositional optimization of gadolinia-doped ceria treatment for enhanced oxygen reduction kinetics in low-temperature solid oxide fuel cells
Korea University, South Korea.
Korea University, South Korea.
Korea University, South Korea.
Korea University, South Korea; University of Illinois, IL 61801 USA.
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2017 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 624, 95-100 p.Article in journal (Refereed) Published
Abstract [en]

We report the optimization of the dopant concentration of gadolinia-doped ceria (GDC) to enhance the oxygen reduction reaction (ORR) kinetics for low-temperature solid oxide fuel cells (LTSOFCs). Crystalline GDC layers with uniform nano-granular structures were prepared by aerosol-assisted chemical vapor deposition (AACVD) on the cathode side of a GDC electrolyte. The current-voltage (I-V) characteristics and power performances of the AACVD GDC-treated cells were measured and their cathodic reactions were analyzed by electrochemical impedance spectroscopy (EIS) to investigate the effect of GDC treatments with various dopant compositions. The cell treated with Gd0.14Ce0.86O2-delta was found to show an optimized power performance with the best ORR kinetics, due to its nano-granular structure and high concentration of oxygen vacancies. (C) 2017 Published by Elsevier B.V.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 624, 95-100 p.
Keyword [en]
Gadolinia-doped ceria; Oxygen reduction reaction; Low-temperature solid oxide fuel cells; Aerosol-assisted chemical vapor deposition
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-136306DOI: 10.1016/j.tsf.2017.01.004ISI: 000395215100013ScopusID: 2-s2.0-85010430660OAI: oai:DiVA.org:liu-136306DiVA: diva2:1087967
Note

Funding Agencies|International Research & Development Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2014K1A3A1A47067412]; Brain Korea 21 Plus program [21A20131712520]

Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-04-20Bibliographically approved

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CiteExportLink to record
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Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
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More languages
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